Marine Pumps＆Seawater Pumps
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Marine Vertical Centrifugal Pumps -
High-Pressure SWRO Pumps -
Marine Horizontal Pump -
Marine Double Suction Split Case Pumps
Marine Pumps for Seawater Cooling & Ballast Systems
FILIPUSI manufactures heavy-duty marine centrifugal pumps for commercial shipbuilding, fleet retrofits, and offshore platforms. 20+ years of engineering excellence in raw seawater cooling, ballast transfer, and SWRO desalination systems.
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Marine Field Expertise
20+ Years Experience
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Quality Assurance
100% Hydrostatic Tested
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Classification Societies
CCS / ABS / DNV / BV / LR / NK
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Marine Vertical Pumps
Compact vertical inline design. Ideal for engine room seawater cooling and limited-space installations. |
Marine Double-Suction Pump
Axially split high-flow design. Built for continuous ballast transfer and large-volume seawater circulation. |
Marine End Suction Pump
Back pull-out structure design. Best for engine room HVAC chillers, fire systems, and general seawater service. |
Seawater Desalination Pump
High-pressure staged hydraulics (SWRO). Maximum resistance to chloride corrosion for reverse osmosis feed. |
Marine & Seawater Pumps by Application
Seawater Cooling Pumps for Main Engine & Central Coolers
Seawater cooling is the most continuous and demanding duty on any vessel: pumps draw raw seawater through sea chests and strainers and deliver it to main engine heat exchangers, central coolers, condensers, and auxiliary machinery around the clock. FILIPUSI marine cooling pumps are offered in nickel-aluminium bronze, tin bronze, AISI 316/316L, and Duplex/Super Duplex stainless to resist chloride pitting, galvanic corrosion, and marine biofouling. Both vertical inline and horizontal end suction configurations are available to match engine-room pipework and available floor space.
Ballast & Bilge Pumps for Tank Transfer and Vessel Trim
Ballast pumps move large volumes of seawater between ballast tanks to control vessel trim, draft, and stability during loading and unloading, while bilge pumps strip accumulated water from the bilge wells. These duties call for pumps that tolerate intermittent dry running, air entrainment, and sediment, often with self-priming capability. Our horizontal and double suction split case marine pumps cover the high flow rates needed for rapid ballast transfer on bulk carriers, tankers, and large commercial vessels.
High-Pressure Pumps for SWRO Seawater Desalination
Onboard freshwater generators and land-based SWRO (seawater reverse osmosis) plants need high-pressure feed pumps that deliver 50-80 bar to the RO membranes while handling highly corrosive seawater. Our dedicated SWRO desalination pumps use Duplex/Super Duplex construction, high-pressure mechanical seals with flush plans, and precision hydraulic design to protect membranes from pressure pulsation.
Marine Fire Pumps & Classification Society Inspection
SOLAS-type marine fire pumps, in both electric motor-driven and diesel engine-driven configurations, supply the fire main and deck monitors at the pressure and flow required by the vessel's safety plan. Because marine projects are built under survey, FILIPUSI pumps are manufactured to the requirements of CCS, ABS, DNV, BV, LR, NK, GL, and KR; on request we arrange the classification society surveyor to attend our works, witness hydrostatic and performance testing, and issue the project-specific inspection certificate, together with material test reports (MTR / EN 10204 3.1).
Technical Specifications Overview
| Parameter | Range / Specification |
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| Flow Rate (Q) | Up to 20,000 m³/h |
| Discharge Head (H) | Up to 200 meters |
| Wetted Materials | Ni-Al Bronze, Duplex SS 2205, Super Duplex 2507, AISI 316L, Cast Steel |
| Classification Societies | CCS, ABS, DNV, BV, LR, NK (documentation & certification available) |
| Fluid Temperature | -15°C to +120°C (high-temp options available) |
| Pressure Rating | PN16 / PN25 / PN40 / PN63 (custom on request) |
Compliance with Global Maritime & Classification Standards
| Application | Engineering Advantage | Material / Certification |
|---|---|---|
| Raw Seawater Loops | Resists chloride pitting, cavitation, and marine fouling with balanced hydraulic volutes and corrosion-resistant metallurgy. |
Ni-Al Bronze Monel Trim |
| Ballast Water Transfer | High-capacity continuous operation; interfaces with automated vessel control loops and ballast water management systems. |
Duplex SS 2205 CCS / ABS / DNV Inspection on Request |
| Boiler Feed & SWRO | Delivers pressures up to 80 bar with dynamic axial thrust balancing for high-pressure reverse osmosis and steam generation. |
Duplex 2205 / 316L SS PN63 Pressure Rated |
| Vessel Retrofitting | Custom dimensions matching existing engine room boundaries and legacy flanges for drop-in replacement of aging equipment. |
Tailor-Made Cast Steel Built to BV / LR Requirements |
| Offshore Platforms | Withstands extreme salinity and structural vibration on oil rigs, FPSO units, and offshore renewable energy installations. |
Super Duplex SS 2507 Explosion-Proof Options |
Marine certification
Frequently Asked Questions
Q1: What materials are best for seawater pumps?
A1: For raw seawater service, Ni-Al Bronze (nickel-aluminum bronze) is the industry standard due to its excellent resistance to chloride pitting, cavitation, and marine fouling. For more corrosive applications (e.g., ballast water treatment, SWRO feed), Duplex Stainless Steel 2205 or Super Duplex 2507 is recommended for higher strength and corrosion resistance. AISI 316L is suitable for mild seawater or brackish water service.
Q2: What marine classification society certifications do you offer?
A2: FILIPUSI marine pumps can be built to the requirements of all major classification societies, with surveyor inspection and certification arranged on request, including CCS (China Classification Society), ABS (American Bureau of Shipping), DNV (Det Norske Veritas), BV (Bureau Veritas), LR (Lloyd's Register), and NK (Nippon Kaiji Kyokai). We arrange the classification society inspection documentation, material test reports (MTR), hydrostatic test reports, and classification society surveyor inspection arranged on request, together with material test reports (MTR / EN 10204 3.1) and hydrostatic/performance test reports as required by the classification society and vessel flag state.
Q3: Can you provide custom dimensions for vessel retrofitting?
A3: Yes. FILIPUSI specializes in custom-engineered marine pumps for vessel retrofitting and fleet modernization. We can manufacture pumps with custom flange-to-flange dimensions, shaft heights, and baseplate mounting patterns to match existing engine room boundaries and legacy flanges, enabling drop-in replacement of aging equipment without pipe modification. Send us your existing pump dimensions or GA drawing, and our engineers will provide a custom proposal within 24 hours.
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- High-Pressure SWRO Desalination: Marine Multi-Stage Centrifugal Pumps »
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